Frost dates for Clemson Oconee Co Airport, SC
At Clemson Oconee Co Airport, the median last spring frost (32°F) is Mar 21 and the median first fall frost is Nov 11, for a typical growing season of 236 days. For a 90% chance that the last frost has passed, wait until Apr 7. Nearby ZIP codes are in USDA hardiness zones 8a to 8b.
- Mar 21Last spring frost (median)50% chance of 32°F after this date
- Apr 7Safer planting date10% chance of 32°F after this date
- Nov 11First fall frost (median)50% chance of 32°F by this date
- 236 daysGrowing season (median)between 32°F freezes
Last spring frost dates
The chance that the temperature drops to the threshold after each date.
| Temperature | 90% chance later | 50% chance later | 10% chance later |
|---|---|---|---|
| 36°F | Mar 18 | Apr 3 | Apr 19 |
| 32°F | Mar 1 | Mar 21 | Apr 7 |
| 28°F | Feb 10 | Mar 7 | Mar 24 |
| 24°F | Jan 19 | Feb 19 | Mar 15 |
First fall frost dates
The chance that the temperature has dropped to the threshold by each date.
| Temperature | 10% chance by | 50% chance by | 90% chance by |
|---|---|---|---|
| 36°F | Oct 19 | Nov 1 | Nov 15 |
| 32°F | Oct 28 | Nov 11 | Dec 1 |
| 28°F | Nov 8 | Nov 27 | Dec 21 |
| 24°F | Nov 21 | Dec 14 | Jan 13 |
Growing season length
Days between the last spring and first fall freeze, as the length reached in 9, 5 and 1 out of 10 years.
| Temperature | 9 in 10 years at least | 5 in 10 years at least | 1 in 10 years at least |
|---|---|---|---|
| 36°F | 192 days | 212 days | 233 days |
| 32°F | 212 days | 236 days | 263 days |
| 28°F | 238 days | 266 days | 298 days |
| 24°F | 265 days | 300 days | 332 days |
Chance of a freeze in any year
| Temperature | Chance per year |
|---|---|
| 36°F | 100% |
| 32°F | 100% |
| 28°F | 100% |
| 24°F | 100% |
ZIP codes whose closest station is this one
| ZIP | Hardiness zone | Avg. extreme low | Distance |
|---|---|---|---|
| 29678 | 8b | 15 to 20°F | 6 km |
| 29665 | 8b | 15 to 20°F | 6 km |
| 29672 | 8a | 10 to 15°F | 10 km |
Not the official USDA Plant Hardiness Zone Map. Zones shown here are the values published in the USDA-ARS / Oregon State University PRISM Group 2023 ZIP code tables, shown unaltered. For the official interactive map, visit planthardiness.ars.usda.gov.
About this station
- NOAA station ID USW00053850, at 34.6719, -82.8864, elevation 272 m (891 ft).
- Data quality: Representative (10+ years), 21 years of freeze data.
- Average days per year at or below 32°F: 38.
- Frost risk changes over short distances. Valleys and low spots freeze earlier than hillsides and city centers.
Nearby weather stations
- Clemson Univ (6 km)
- Sandy Springs 2 NE (16 km)
- Walhalla (20 km)
- Anderson Co Airport (25 km)
- Anderson (26 km)
- Pickens (28 km)
- Long Creek (35 km)
- Jocassee 8 WNW (39 km)
Sources
- NOAA National Centers for Environmental Information, U.S. Climate Normals 1991–2020, annual/seasonal normals by station (version 1.0.1), file dated June 27, 2023; documentation.
- USDA Agricultural Research Service and PRISM Group, Oregon State University, 2023 Plant Hardiness Zone Map ZIP code tables (CONUS, Alaska, Hawaii, Puerto Rico), files dated November 17, 2023. Data © PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed November 1, 2026. Official map: planthardiness.ars.usda.gov.
- U.S. Census Bureau, 2024 Gazetteer ZIP Code Tabulation Areas file, dated August 30, 2024 (ZIP centroids used to find the nearest station).
Freeze dates are 30-year probabilities, not forecasts. Check your local forecast before planting tender plants.
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